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8_murik_8 [283]
3 years ago
11

Which two cellular structures have a role in protecting cells from the enviroment

Chemistry
2 answers:
qaws [65]3 years ago
4 0
The nucleus and ribosomes help protect cells from the environment. 
Anna [14]3 years ago
3 0
The cell membrane and cell wall for plants animal cells don't have cell walls
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1 Aluminum reacts with oxygen to produce aluminum oxide, what is the chemical equation?​
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Answer:  Aluminum reacts with oxygen to produce aluminum oxide as follows: 4Al + 3O2 → 2Al2O3 a.

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2 years ago
In your own words, describe in as much detail as possible, what is air made of.
Advocard [28]

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nitrogen, oxygen, argon, carbon dioxide, neon, helium, krypton, hydrogen, and xenon. It does not include water vapor because the amount of vapor changes based on humidity and temperature.

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Does an astronaut’s body change in size and shape in space?
iragen [17]

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It's made of salt

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3 years ago
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Which type of hybridization is observed when central atom is located at the centre of regular tetrahedron
Ann [662]

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sp3 hybridization

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The central atom is then located at the center of a regular tetrahedron at a bond angle of 109°.

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